diff --git a/test/zdtm/lib/zdtmtst.h b/test/zdtm/lib/zdtmtst.h
index 28ee53612..69de1ec3f 100644
--- a/test/zdtm/lib/zdtmtst.h
+++ b/test/zdtm/lib/zdtmtst.h
@@ -2,9 +2,10 @@
 #define _VIMITESU_H_
 
 #include <sys/types.h>
+#include <unistd.h>
 
 #ifndef PAGE_SIZE
-# define PAGE_SIZE 4096
+# define PAGE_SIZE (unsigned int)(sysconf(_SC_PAGESIZE))
 #endif
 
 #ifndef PR_SET_CHILD_SUBREAPER
diff --git a/test/zdtm/live/transition/maps007.c b/test/zdtm/live/transition/maps007.c
index 0b6dadb63..e3cfb7670 100644
--- a/test/zdtm/live/transition/maps007.c
+++ b/test/zdtm/live/transition/maps007.c
@@ -14,7 +14,6 @@
 
 #define MAP_SIZE (1UL << 20)
 #define MEM_SIZE (1UL << 29)
-#define PAGE_SIZE 4096
 
 const char *test_doc	= "create random mappings and touch memory";